我的 Qt 项目中有一个非常奇怪的错误。这是代码,main_window.h:
#include <QtGui>
#include <QtSql>
class main_window : public QTabWidget
{
Q_OBJECT
/// @name List Widgets
private:
QListWidget* m_documents_list;
....
这是main_window.cpp:
...
void main_window::create_documents_widget()
{
m_documents = new QWidget(this);
m_documents_list = new QListWidget(m_documents);
}
...
我无法理解的问题在 QListView 中,我没有在我的项目中使用它。只有 QListWidget,但是当我尝试构建项目时,会出现以下错误:
qlistview.h:194:错误:ISO C++ 禁止声明没有类型的“QListView”
qlistview.h:194: 错误:在 '&' 标记之前需要 ',' 或 '...'
还有以下奇怪的错误:
qlistwidget.h:308:错误:没有在类“QListWidget”中声明的“void QListWidget::removeItemWidget(QListWidgetItem)”成员函数*
qlistwidget.h:311:错误:没有在类“QListWidget”中声明的“void QListWidget::addItem(QListWidgetItem)”成员函数*
qlistwidget.h:314:错误:没有在类“QListWidget”中声明的“QListWidgetItem QListWidget::itemAt(int, int) const”成员函数*
等等
提前致谢。
UPD:我在 Windows 7 上使用 QtCreator 2.2.1。
UPD2:Qt 版本是 4.7.1。
UPD3:完整的输出
In file included from c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui/QtGui:68,
from ..\my_project\/main_window.h:4,
from ..\my_project\main.cpp:2:
c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui/qlistview.h:194: error: ISO C++ forbids declaration of 'QListView' with no type
c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui/qlistview.h:194: error: expected ',' or '...' before '&' token
c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui/qlistview.h:194: error: ISO C++ forbids declaration of 'QListView' with no type
c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui/qlistview.h:194: error: ISO C++ forbids declaration of 'QListView' with no type
c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui/qlistview.h:194: error: expected ';' before '&' token
In file included from c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui/QtGui:69,
from ..\my_project\/main_window.h:4,
from ..\my_project\main.cpp:2:
c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui/qlistwidget.h:202: error: redefinition of 'class QListWidget'
c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui/qlistview.h:58: error: previous definition of 'class QListWidget'
c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui/qlistwidget.h:308: error: no 'void QListWidget::removeItemWidget(QListWidgetItem*)' member function declared in class 'QListWidget'
c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui/qlistwidget.h:311: error: no 'void QListWidget::addItem(QListWidgetItem*)' member function declared in class 'QListWidget'
c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui/qlistwidget.h:314: error: no 'QListWidgetItem* QListWidget::itemAt(int, int) const' member function declared in class 'QListWidget'
c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui/qlistwidget.h: In member function 'void QListWidgetItem::setSelected(bool)':
c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui/qlistwidget.h:318: error: 'class QListWidget' has no member named 'setItemSelected'
c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui/qlistwidget.h: In member function 'bool QListWidgetItem::isSelected() const':
c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui/qlistwidget.h:321: error: 'class QListWidget' has no member named 'isItemSelected'
c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui/qlistwidget.h: In member function 'void QListWidgetItem::setHidden(bool)':
c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui/qlistwidget.h:324: error: 'class QListWidget' has no member named 'setItemHidden'
c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui/qlistwidget.h: In member function 'bool QListWidgetItem::isHidden() const':
c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui/qlistwidget.h:327: error: 'class QListWidget' has no member named 'isItemHidden'